Hollow drill for fabric and the like
Patent 5098234 Issued on March 24, 1992. Estimated Expiration Date: 
March 24, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 24, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 224669 filed on 07/27/1988US Classes:408/204, Having axial, core-receiving central portion76/108.1, Drill408/205With lateral outletExaminersPrimary: Schwartz, Larry I.Assistant: Schultz, Robert Attorney, Agent or FirmForeign Patent References
International ClassB23B 051/00AbstractA hollow drill for fabric and the like is comprised of a hollow shaft having highly polished inside and outside surfaces and an outside diameter of preferably not more than 0.130 inches. A tip having a larger outside diameter and smaller inside diameter is brazed or soldered to the shaft. The shaft is made by a continuous manufacturing method such as extrusion and the tip is machined or molded followed by finish machining.Field of SearchHaving axial, core-receiving central portionHaving product-receiving chamber DRILLING SMALL HOLES TREPANNING WITH PRODUCT HANDLING OR RECEIVING MEANS With lateral outlet And having stepped cutting edges Hollow milling tool Having peripherally spaced cutting edges With axially extending relief channel Having hollow or channelled needle Having hollow needle Rooting hair in doll or wig | |
